Khaled, Alia

ABSTRACT Introduction Heart failure with preserved ejection fraction (HFpEF) accounts for about half of the cases of heart failure. HFpEF and atrial fibrillation (AF) often coexist and share similar risk factors. The objective of this study is to examine the differences in risk of clinical outcomes among drug refractory AF patients with concomitant HFpEF treated with catheter ablation (CA) versus antiarrhythmic drugs (AADs). Methods Using the Optum PanTher Electronic Health Record (EHR) database, adult HF patients with left ventricular ejection fraction (LVEF) ≥ 50% and an AF diagnosis with a history of AAD prescription between January 2014 and March 2021 were identified. Patients were classified into CA or AAD groups based on their subsequent treatment for AF. The primary outcome of interest included a composite of AF/atrial flutter (AFL)/atrial tachycardia‐related inpatient admissions and electrical cardioversions in the 57–730 days post‐index treatment period (follow‐up extended to 1095 days for sub‐analysis). Overall HF‐related admissions and systolic HF‐related admissions were assessed as secondary outcomes. Inverse probability of treatment weighting (IPTW) of propensity scores was used to balance the two cohorts on study covariates. Cox regression analyses were performed to examine outcomes in the covariate‐balanced cohorts. Results The final sample included 586 CA and 1436 AAD patients. The cohorts were well balanced on patient demographics and clinical characteristics after applying IPTW. Patients treated with CA had a significantly lower rate of primary composite outcome as compared to those treated with AADs (15.4% vs. 24.9%, log‐rank p test = 0.001). Cox model revealed a 34% lower risk of atrial arrhythmia related admissions and cardioversion among patients treated with CA versus AADs in the 57–730 days post‐index treatment period (Hazard ratio [HR] 0.66, 95% confidence interval [CI] 0.50–0.87, p = 0.003). There were no significant differences in HF and systolic HF‐related admissions between the two groups (except in the subgroup analysis of patients < 70 years of age, patients with paroxysmal AF, and patients with persistent AF). Similar results were observed in sub‐analyses with 57–1095 days of follow‐up. Conclusion Among drug refractory AF patients with concomitant HFpEF, CA was shown to reduce the risk of recurrent arrhythmias as compared to AAD continuation.

Background Balloon guide catheters (BGCs) can be used adjunctively during mechanical thrombectomy (MT) for acute ischemic stroke (AIS). Evaluating the potential economic impact associated with adjunctive BGC use is an important consideration for resource allocation. Methods Decision tree models were used to estimate the economic value of BGC use in MT through its impact on functional outcomes. Healthcare utilization cost estimates in the short- and long-term for patients with different 90-day mRS scores were analyzed for MT-only and MT + BGC scenarios. Deterministic (one-way) and probabilistic sensitivity analyses were performed to evaluate the robustness and uncertainty of model parameters. Results Per-patient index hospitalization cost was estimated at $65,260 for MT-only and $62,883 for MT + BGC scenarios. Per-patient one-year post-index hospitalization cost was estimated at $27,569 for MT-only and $24,830 for MT + BGC. MT + BGC had a total cost savings of $5117 compared with MT-only. Deterministic (one-way) sensitivity analysis demonstrated that cost saving per patient was most sensitive to the proportion of patients in the mRS 0–2 category in both MT + BGC and MT-only. In a probabilistic sensitivity analysis, mean per-patient costs for the index hospitalization were estimated at $63,737 for MT-only and $61,425 for MT + BGC. Mean per-patient cost estimates one-year post-index hospitalization was $27,445 for MT-only and $24,715 for MT + BGC. MT + BGC had a total cost savings of $5043 compared with MT-only. Conclusion Mechanical thrombectomy with adjunctive BGC use may reduce short-term and long-term patient costs due to improved functional outcomes when compared to MT treatment alone for AIS.

Background Mechanical thrombectomy (MT) has become the standard of care for the treatment of acute ischemic stroke (AIS). The EmboTrap revascularization device (CERENOVUS, Johnson & Johnson Medical Devices, Irvine, California, USA) has an innovative, dual layer feature designed to facilitate thrombus retrieval. Objective To investigate the real-world clinical and economic outcomes among patients with AIS undergoing MT using the EmboTrap device in the United States (US). Methods Adult patients (≥18 years) who underwent MT for AIS using the EmboTrap device between July 2018 and December 2020 were identified from the Premier Healthcare Database. Patient outcomes included discharge status (including in-hospital mortality), mean length of stay (LOS), intracranial hemorrhage (ICH), mean hospital costs, and 30-day readmissions (all-cause, cardiovascular (CV)-related, and AIS-related). Results A total of 318 patients (mean age 68.5±14.6 years) with AIS treated with the EmboTrap device as the only stent retriever used were identified. Approximately 25% of patients were discharged to home/home health organization, and the in-hospital mortality rate was 10.7%. The rate of ICH was 16.7%. Mean hospital LOS was 9.9±11.3 days, and the mean hospital costs were US$47 367±30 297. The 30-day readmission rate was 9.6% for all-causes, 5.9% for CV-related causes, and 2.6% for AIS-related causes. Conclusions This is the first study in the US to report real-world outcomes sourced by retrospective database analysis among patients with AIS undergoing MT using the EmboTrap device. Further research is needed to better understand performance of the EmboTrap device in real-world settings.